Koenig - Remove developer experiments flag requirement

refs TryGhost#9505
- remove requirement for the `enableDeveloperExperiments` flag to be able to use Koenig
- it's now possible to enable as a standard Labs beta feature

core/server/models/post.js

@@ -256,7 +256,6 @@ Post = ghostBookshelf.Model.extend({
         // TODO: re-render all content and remove the version toggle for Ghost 2.0
         if (mobiledoc) {
             let version = 1;
-            let devExperimentsEnabled = config.get('enableDeveloperExperiments');
             let koenigEnabled = labs.isSet('koenigEditor') === true;
 
             let mobiledocIsCompatibleWithV1 = function mobiledocIsCompatibleWithV1(doc) {
@@ -275,7 +274,7 @@ Post = ghostBookshelf.Model.extend({
                 return false;
             };
 
-            if ((devExperimentsEnabled && koenigEnabled) || !mobiledocIsCompatibleWithV1(mobiledoc)) {
+            if (koenigEnabled || !mobiledocIsCompatibleWithV1(mobiledoc)) {
                 version = 2;
             }
 

core/test/unit/models/post_spec.js

@@ -1891,7 +1891,6 @@ describe('Unit: models/post', function () {
     });
 
     describe('Mobiledoc conversion', function () {
-        let configUtils = require('../../utils/configUtils');
         let labs = require('../../../server/services/labs');
         let origLabs = _.cloneDeep(labs);
         let events;
@@ -1906,10 +1905,7 @@ describe('Unit: models/post', function () {
             });
         });
 
-        afterEach(configUtils.restore);
-
         it('uses v2 if Koenig is enabled', function () {
-            configUtils.set('enableDeveloperExperiments', true);
             sandbox.stub(labs, 'isSet').callsFake(function (key) {
                 if (key === 'koenigEditor') {
                     return true;